Thermal and mechanical properties of silane-crosslinked poly(vinylchloride)

被引：1
|
作者：
Hidalgo, M
Beltran, MI
Reinecke, H
Mijangos, C
机构：
[1] Inst Ciencia & Tecnol Polimeros, E-28006 Madrid, Spain
[2] Univ Alicante, Dpto Ingn Quim, E-03080 Alicante, Spain
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 1998年 / 70卷 / 05期
关键词：
crosslinked poly(vinylchloride); organosilanes grafting; gel content; mechanical and thermal properties; reactive processing;
D O I：
10.1002/(SICI)1097-4628(19981031)70:5<865::AID-APP5>3.0.CO;2-R
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A comparative study has been made of the crosslinking of plasticized PVC by grafting of gamma-aminopropyltriethoxysilane (ASD and sodium gamma-mercaptopropyltrimethoxysilane (NaMSi) during processing. The influence of type of reagent and concentration, and the rheological behavior were investigated to obtain a crosslinked material with improved mechanical properties and good thermal stability. Depending on the reagent concentration, different gel contents, ranging from 0-100%, were obtained with both reagents. For all crosslinked systems the mechanical properties above T-g were improved. In the case of ASi-crosslinked PVC, the thermal stability deteriorated significantly but, for NaMSi-crosslinked PVC, thermal stability remains close to that of raw PVC, and the separation of the grafting and crosslinking processes is more viable in this case. (C) 1998 John Wiley & Sons, Inc.
引用
收藏
页码：865 / 872
页数：8
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